I have a red stain/algae growing in my tank. Its all over my decorations and my fake plants and now its starting to show on the sand. I'm not sure what it is or how to take care of it. It get worse each day. Its a 20 gallon tank and about 2 weeks into cycling. I didint want to take anything out yet to wash it so it wouldnt mess up the bacteria. Can anyone tell me what it is. Thanks.